51956187 has 8 divisors (see below), whose sum is σ = 69947904. Its totient is φ = 34300968.

The previous prime is 51956173. The next prime is 51956209. The reversal of 51956187 is 78165915.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51956187 - 2⁴ = 51956171 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51956137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83763 + ... + 84380.

It is an arithmetic number, because the mean of its divisors is an integer number (8743488).

Almost surely, 2^51956187 is an apocalyptic number.

51956187 is a deficient number, since it is larger than the sum of its proper divisors (17991717).

51956187 is a wasteful number, since it uses less digits than its factorization.

51956187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168249.

The product of its digits is 75600, while the sum is 42.

The square root of 51956187 is about 7208.0640257978. The cubic root of 51956187 is about 373.1462576937.

The spelling of 51956187 in words is "fifty-one million, nine hundred fifty-six thousand, one hundred eighty-seven".